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Related to antiknock: antiperspirant


A substance, such as tetraethyl lead, added to gasoline to reduce engine knock.


(Automotive Engineering) a compound, such as lead tetraethyl, added to petrol to reduce knocking in the engine


(ˌæn tiˈnɒk, ˌæn taɪ-)

of, pertaining to, or being a material added to fuel for an internal-combustion engine to eliminate or minimize knock.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.antiknock - any of various compounds that are added to gasoline to reduce engine knockingantiknock - any of various compounds that are added to gasoline to reduce engine knocking
lead tetraethyl, tetraethyl lead - a clear oily poisonous liquid added to gasoline to prevent knocking
chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
Adj.1.antiknock - suppressing or eliminating engine knock in combustion engines; "antiknock properties"; "antiknock rating"
leaded - treated or mixed with lead; "leaded gasoline"; "leaded zinc"
References in periodicals archive ?
8, 2014 /PRNewswire/ -- China's demand for Antiknock Agent has grown at a fast pace in the past decade.
005 g / liter, corresponding to the ID 11 in Table B1 of section 265 of the Customs Code and antiknock characteristic index search method 98, delivered the station;- Untaxed diesel and diesel for boaters with a flash point below 120 A C (60-103 nf t) delivered to the station.
Specialty fuel additives include deposit control agents, corrosion inhibitors, antioxidants, antiknock agents, metal deactivators and others.
Regular Gasoline: Gasoline having an antiknock index, i.
Control over combustion quality and improvement in the antiknock properties of petrol engines through the use of oxygenates has become widely accepted practise.
Enriched fuel with additives like ignition accelerators, antiknock agents.
For many years the business was based almost entirely on the production and sale of the antiknock compound for use in leaded petrol.
Antiknock additives are the second largest class of objects amongst the recent patents, but the number of these patents has grown on the basis of metal (manganese, iron) compounds, which cannot be regarded as modern additives.
Lead (Pb), a toxic contaminant metal used in many important industrial processes, is widely used in batteries, paint, and varnishes, as an antiknock compound in gasoline, in pipe covering, and in welding.
Octane ratings measure the antiknock properties of a gasoline; higher numbers indicate a better resistance to knocking.
At that time, the main product was ethylene dibromide, an additive in antiknock gasoline compounds.
8~ that resembles benzene but is less volatile, flammable, and toxic, is produced commercially from light oils from coke-oven gas and coal tar and from petroleum, and is used as a solvent, in organic synthesis, and as an antiknock agent for gasoline.